CVE-2015-6525

Severity Score

10.0

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Multiple integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbuffer_add, (2) evbuffer_prepend, (3) evbuffer_expand, (4) exbuffer_reserve_space, or (5) evbuffer_read function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier was SPLIT from CVE-2014-6272 per ADT3 due to different affected versions.

Vulnerabilidad de desbordamientos de entero múltiple en la API evbuffer en Libevent 2.0.x en versiones anteriores a 2.0.22 y 2.1.x en versiones anteriores a 2.1.5-beta, permite a atacantes dependientes del contexto causar una denegación de servicio o posiblemente tener otro impacto no especificado a través de 'entradas increíblemente grandes' en la función (1) evbuffer_add, (2) evbuffer_prepend, (3) evbuffer_expand, (4) exbuffer_reserve_space o (5) evbuffer_read, lo que desencadena un desbordamiento de buffer basado en memoria dinámica o un bucle infinito. NOTA: este identificador ha sido SEPARADO de CVE-2014-6272 por ADT3 debido a las diferentes versiones afectadas.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-08-20 CVE Reserved
2015-08-24 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-189: Numeric Errors

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://archives.seul.org/libevent/users/Jan-2015/msg00010.html	2015-08-26
http://www.debian.org/security/2015/dsa-3119	2015-08-26

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				7.1 Search vendor "Debian" for product "Debian Linux" and version "7.1"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.1 Search vendor "Libevent Project" for product "Libevent" and version "2.0.1"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.2 Search vendor "Libevent Project" for product "Libevent" and version "2.0.2"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.3 Search vendor "Libevent Project" for product "Libevent" and version "2.0.3"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.4 Search vendor "Libevent Project" for product "Libevent" and version "2.0.4"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.5 Search vendor "Libevent Project" for product "Libevent" and version "2.0.5"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.6 Search vendor "Libevent Project" for product "Libevent" and version "2.0.6"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.7 Search vendor "Libevent Project" for product "Libevent" and version "2.0.7"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.8 Search vendor "Libevent Project" for product "Libevent" and version "2.0.8"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.9 Search vendor "Libevent Project" for product "Libevent" and version "2.0.9"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.10 Search vendor "Libevent Project" for product "Libevent" and version "2.0.10"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.11 Search vendor "Libevent Project" for product "Libevent" and version "2.0.11"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.12 Search vendor "Libevent Project" for product "Libevent" and version "2.0.12"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.13 Search vendor "Libevent Project" for product "Libevent" and version "2.0.13"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.14 Search vendor "Libevent Project" for product "Libevent" and version "2.0.14"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.15 Search vendor "Libevent Project" for product "Libevent" and version "2.0.15"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.16 Search vendor "Libevent Project" for product "Libevent" and version "2.0.16"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.17 Search vendor "Libevent Project" for product "Libevent" and version "2.0.17"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.18 Search vendor "Libevent Project" for product "Libevent" and version "2.0.18"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.19 Search vendor "Libevent Project" for product "Libevent" and version "2.0.19"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.20 Search vendor "Libevent Project" for product "Libevent" and version "2.0.20"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.0.21 Search vendor "Libevent Project" for product "Libevent" and version "2.0.21"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.1.1 Search vendor "Libevent Project" for product "Libevent" and version "2.1.1"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.1.2 Search vendor "Libevent Project" for product "Libevent" and version "2.1.2"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.1.3 Search vendor "Libevent Project" for product "Libevent" and version "2.1.3"		-		Affected
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				2.1.4 Search vendor "Libevent Project" for product "Libevent" and version "2.1.4"		-		Affected